Powdered-coal feeder



W. M. THOMAS POWDERED COAL FEEDER Feb, 7, 1928. 1,658,401

Filed April 11, 1927 2 Sheets-Sheet 1 VENTOE Q1 XML/w wig/7g Feb. 7,1928. 1,658,401

w. M. THOMAS POWDERED COAL FEEDER Filed April 11, 1927 2 heets-Sheet 2 Rg m Q Q g 1\ m a: *2: I;

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Patented Feb. 7, 1928.

UNITED s'm'rns 1, 5 ,401 PATENT OFFICE,

WILLIAM M. THOMAS, or cincmnarr, OHIO.

POWERED-COAL FEEDER. A

Application meea rn 11; 1927. Serial no. 182,730.

trio means and operating in connection with an agitator, between whichagitator and bot tom of the hopper holding the powdered coal is a spacethrough which the powdered coal passes, means being provided for. makingsaid space of a less or greater extent, in order to be a smaller orgreater amount of powdered coal.

All the features and advantages of my invention will become apparentfrom reading the following specification and claims.

In the accompanying drawing forming part of this specification: j

Fig.1is a side view of my new coal feeding device,

Fig.2 is afront view,

Fig. 3 is a section taken on Fig. 1, and s Fig. i is a section taken online H of Fig. 2.

The device is formed of a blower or fan 1, having a base 2, drivingmotor 3, fan blades 4, secured to a hub 5, which is se curely mounted ona'motor shaft'6.

The blower 1, is joined rigidly by a neck 7 to the side 8, of thehousing or box 9. This box or housing carries at its upper part a line83 of flangelO which is secured to a hopper 12,

this flange is also secured in the housing 9 by cap screws'13. i

Mounted to the side 14; of the box, I have a, cap 15 which carries abearing 16, and mounted in this bearing is one end of a shaft 17, theother end of the shaft having.

a bifurcated end 18 which engages over a pin 19 secured in the bearing20, the bearing is connected to the hub 5 of the blower by screws 21. Toshaft 17 at its central part, I provide a curved plate 22 which forms aneccentric and is used to engage or-vibrate the shaker wires 23,whenadjusted in a contact relation by the adjusting screw 2a, which hasa handle 25 atone end and at the other end is mounted in a cap 26, thecap 26 is fastened to a plate 32 to which the wires 23 I are alsofastened. In cap 26 I mount these-t screw 27 which engages groove 28of'theset screw 24 to prevent displacement.

-As the handle 25 is turned causing the screw 24- to rise upwardly theshaker wires 3 23 will be sprung upwardly also and cause a vibrating oragitation, due to the eccentric plate 22, said agitation beingcarried'to the trough-like agitator. 29, causing the coal dust to dropor slip through the slotted opening 30. which is in the hopper base 31.I

7 It will be seen from the foregoing description of-the agitatingmemben'that an adjustment is obtained for feeding the coal dust. If asmall amount of coal dust is ,re-

quired the screw 24: is screwed downwardly,

which closes the gap 33between the agitator 29 and the hopper base 31,thereby allowing lesscoaldustto sift through, and in order to get agreater amount of coal dust through opening 30, thescrew 2a is turnedupwardly and if a still greater amount is required, the vibration causedby the eccentric plate 22 acting upon the vwires 23, an agitation iscaused which will give a greater amountof coal dust. i i

As the coal dust passes through the opening 30 it is drawn through theneck 7 of the blower, which forces it out throughtheopening 34 fromwhence it is carried to the furnace for ignition.

The blower and the shaft 17 are operated from the motor 3, and thebifurcated end of the shaft 17 is to allow for any variation ordisalignment that may be caused in the operation of thedevice,thebifurcated end 19 and pin 18 provide a flexible shaft or auniversal joint, with shaft 6' of the motor.

In order to prevent dirt or dust from get-- ting in flexible shaftjoint, I provide felt washers 40, at joint end of shaft 17, and at theother end I provide a spring 43 in hearing 16 to keep end 18 and pin 19in engagement. Packing 42 is to retain oil in bearing, which issuppliedbv, oiler 41. and a washer A i is for thrust for spring 43 andshaft 17.

In order to further regulate the'feeding of the coal dust, I provide aregulator formed of aplate 35 which is fastened to the side 14 of thehousing which plate has openings or ports 36 which are closed by ashutter 37 when desired; this shutter having apin 38 with which toincrease or reduce the size of the opening for regulating the draftcaused by the blower 1.

While I have described one preferred form of carrying my invention intoeffect, it will be readily understood that I may modify and change thesame somewhat, and I wish to be understood as claiming all such changesand modifications which fall within a the scope of this specificationand the appended claims.

What I claim as new and my invention and desire to secure by LettersPatent i1- 1. In a powdered coal feeder, means for holding powderedcoal, a shaft suitably supported, an agitator suitably supported withinthe coal-holding means, shaker rods, a support for said shaker rods attheir. lower extremity, at their upper extremity connected tosaidagitator, means for operating against said shaker rods to vibrate themand operate the agitator so that a predetermined amount of powdered coalwill fall.

2. In a powdered coal feeder, means for holding powdered coal, a shaftsuitably supported, an agitator suitably supported within the coalholding means, shaker rods, a support for said shaker rods at theirlower extremity, at their upper extremity connected to said agitator,means for operating against said shaker rods to vibrate them and operatethe agitator so that a predetermined amount of powdered coal will fall,and means for regulating the amount or powdered coal to be used.

3. In a powdered coal feeder, a receptacle for holding the powderedcoal, having an outlet slot atthe bottom thereof, an agita tor, saidagitator in the receptacle and spaced from the bottom thereofandextending through the slot in the receptacle, series of shaker rods, asupporting means for the bottom of said shaker rods, said shaker rodsconnected at the top to lower extension of the agitator, and means foroperating said shaker rods and thus operat ing the agitator so thatpowdered coal will pass down through the slotted opening in the bottomof the holding receptacle.

nessaoi 4. In a powdered coal feeder, a receptacle for holding, thepowdered coal, having an outlet slot at the bottom thereof, an agitator,said agitator in the receptacle and spaced from' the bottom thereof, andextending through the slot in the receptacle, a series of shaker rods, asupporting means for the bottom of said shaker rods, said shaker rodsconnected at the top to lower extension of the agitator, and means foroperating said shaker rods and thus operat ing the agitator so thatpowdered coal will pass down through the slotted opening in the bottomor" the holding receptacle, and means for moving the shaker rodsupwardly and downwardly to increase or diminish the space between thebottom or the agitator and the slot so that a greater or lesser amountof powdered coal will pass through said slot.

5. In a powdered coal feeder, means for holding powdered coal, a shaftsuitably supported, an eccentric on said shaft, an agitator suitablysupported within the coal holoing means, shaker rods, a support for saidshaker rods at their lower extremity, at their upper extremity connectedto said agitator, said eccentric shaft constituting means for operatingagainst said shaker rods to vibrate them and operate the agitator sothat a predetermined amount or" powdered coal will fall.

6. In a powdered coal feeder, means for holding powdered coal, a shaftsuitably supported, an agitator suitably supported within the coalholding means, flexible shaker rods, a support for said shaker rods'attheir lower extremity, at their upper extremity connected to saidagitator, means for operating against said shaker rods to vibrate the5211116.

In testimony whereof, I aflix my signature at the city of Cincinnati, inthe county of Hamilton and State of Ohio, this 26th day of March, 1927.

WILLIAM M. THOMAS.

